JP2006094200A - Imaging apparatus, focusing display method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging apparatus (camera) whereby a user can always confirm a focused part even when the camera is moved. <P>SOLUTION: In the imaging apparatus provided with a CCD 23 for imaging an object and a display section 19 for displaying image data of the object obtained by the CCD 23 as a through-image, when a shutter key is half-depressed, a control section 32 carries out focus processing and displays a focus frame to a part in the through-image that is focused. When the user moves the apparatus main body in an optional direction, a movement detection section 42 detects a moving distance at that time. The control section 32 moves the focus frame in a direction reverse to the moving direction of the apparatus main body on the basis of the moving distance at that time to position the focus frame to the focused part in the through-image. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an imaging apparatus such as a digital camera, and more particularly to an imaging apparatus having an AF (automatic focusing) function, and a focus display method and program used for the imaging apparatus.

For example, some imaging devices such as digital cameras have an AF function (automatic focusing function) that automatically focuses on a subject. This AF function operates by half-pressing the shutter key, moves the focus lens, and focuses, for example, on the center portion of the screen. At that time, it is common practice to display a focus frame at the center of the screen to let the user know the focused part (see, for example, Patent Document 1).
JP 2000-92354 A

  As described above, the AF function basically focuses on the center of the screen. However, since the subject to be photographed is not always located at the center of the screen, usually the camera is moved with the shutter key half-pressed (focus locked) to change the shooting range (composition). Operations are performed.

  However, even if the composition is changed by moving the camera, the focus frame remains fixed at the center of the screen. For this reason, the user does not know which part of the subject is in focus, and as a result, the intended image may not be obtained due to wrong shutter timing.

  SUMMARY An advantage of some aspects of the invention is that it provides an imaging apparatus, an in-focus display method, and a program that can always check a focused portion even when a camera is moved. .

  An imaging apparatus according to a first aspect of the present invention includes an imaging unit that images a subject, a display unit that displays image data of the subject obtained by the imaging unit as a through image, and a through image displayed by the display unit. A focusing processing means for performing a focusing process and displaying a focus frame on a portion focused by the focusing process; a movement detecting means for detecting a moving distance when the apparatus main body is moved in an arbitrary direction; Based on the moving distance detected by the movement detecting means, the focus frame displayed by the focusing processing means is moved in a direction opposite to the moving direction of the apparatus main body to focus on the through image. And a control means for positioning in the part.

  According to such a configuration, the focus frame is displayed at the portion focused by the focusing process. Here, when the apparatus main body is moved in an arbitrary direction to change the composition, the focus frame also moves in accordance with the movement at that time, and is positioned at the focused portion in the through image. As a result, the user can always take a picture while grasping the in-focus portion.

  According to a second aspect of the present invention, in the imaging apparatus according to the first aspect, a color detection unit that detects a color of a focused portion from the through image, and a color detected by the color detection unit. And color display means for displaying in a predetermined format.

  According to such a configuration, since the color of the in-focus portion is detected and displayed in, for example, a window format, it is possible to more accurately grasp where the focus is from the displayed color. it can.

  According to a third aspect of the present invention, in the imaging apparatus according to the first aspect, an image extracting unit that extracts an image of a focused portion from the through image, and an image extracted by the image extracting unit. And image display means for displaying in a predetermined format.

  According to such a configuration, since the image of the in-focus portion is extracted and displayed in, for example, a window format, it is possible to more accurately grasp where the focus is from the displayed image. it can.

  According to a fourth aspect of the present invention, there is provided an in-focus display method for use in an imaging apparatus including an imaging device that captures an image of a subject and a display unit that displays image data of the subject obtained by the imaging device as a through image. A focus display method that performs a focusing process on a through image displayed on the display unit, displays a focus frame on a portion focused by the focusing process, and moves the apparatus main body in an arbitrary direction. Detecting the movement distance when the camera body is moved, and moving the focus frame in a direction opposite to the movement direction of the apparatus main body based on the movement distance of the apparatus main body to adjust the focus in the through image And a step of positioning the portion.

  According to such an in-focus display method, the same effects as those of the first aspect of the invention can be achieved by executing the processing according to the steps.

  A program according to claim 5 of the present invention is executed by a computer that controls an imaging apparatus including an imaging device that captures an image of a subject and a display unit that displays image data of the subject obtained by the imaging device as a through image. A program for performing a focusing process on the through image displayed on the display unit on the computer and displaying a focus frame on a portion focused by the focusing process, A function of detecting a movement distance when moved in the direction, and a focus frame in the through image by moving the focus frame in a direction opposite to the movement direction of the apparatus body based on the movement distance of the apparatus body. And a function of positioning at the combined portion.

  Therefore, when the computer executes the program for realizing each function, the same effects as those of the first aspect of the invention can be achieved.

  According to the present invention, when the apparatus main body is moved in an arbitrary direction, the focus frame also moves in accordance with the movement at that time, and is positioned at the focused portion in the through image. It is possible to take a picture while grasping the focused part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an external configuration when a digital camera is taken as an example of an imaging apparatus according to an embodiment of the present invention. FIG. 1 (a) is mainly a front configuration, and FIG. It is a perspective view which shows the structure of a back surface.

  The digital camera 1 has a photographing lens 3, a self-timer lamp 4, an optical finder window 5, a strobe light emitting unit 6, a microphone unit 7 and the like on the front surface of a substantially rectangular thin plate-like body 2 on the upper surface (for the user). On the right end side, a power key 8 and a shutter key 9 are provided.

  The power key 8 is a key operated every time the power is turned on / off, and the shutter key 9 is a key for instructing a photographing timing at the time of photographing.

  Also, on the back of the digital camera 1, a shooting mode (R) key 10, a playback mode (P) key 11, an optical viewfinder 12, a speaker unit 13, a macro key 14, a strobe key 15, a menu (MENU) key 16, a ring A key 17, a set (SET) key 18, a display unit 19, and the like are provided.

  The shooting mode key 10 is operated automatically from the power-off state to automatically turn on the power and shift to the still image shooting mode. On the other hand, by repeatedly operating from the power-on state, the still image mode and the moving image mode are switched. Set cyclically. The still image mode is a mode for photographing a still image. The moving image mode is a mode for shooting a moving image.

  The shutter key 9 is commonly used for these photographing modes. That is, in the still image mode, a still image is taken at the timing when the shutter key 9 is pressed. In the moving image mode, shooting of a moving image is started at a timing when the shutter key 9 is pressed, and shooting of the moving image is ended when the shutter key 9 is pressed again.

  When the playback mode key 11 is operated from the power-off state, the playback mode key 11 is automatically turned on to enter the playback mode.

  The macro key 14 is operated when switching between normal shooting and macro shooting in the still image shooting mode. The strobe key 15 is operated when switching the light emission mode of the strobe light emitting unit 6. The menu key 16 is operated when selecting various menu items. The ring key 17 is integrally formed with item selection keys in the up, down, left, and right directions, and the set key 18 located in the center of the ring key 17 sets the item selected at that time. To operate.

  The display unit 19 is composed of a color liquid crystal panel with a backlight, and displays a through image on the monitor as an electronic viewfinder in the photographing mode, and reproduces and displays the selected image and the like in the reproduction mode.

  Although not shown, the digital camera 1 has a memory card slot for attaching / detaching a memory card used as a recording medium, a serial interface connector for connecting to an external personal computer, etc., for example, USB (Universal). (Serial Bus) connector and the like are provided.

  FIG. 2 is a block diagram showing an electronic circuit configuration of the digital camera 1.

  In the digital camera 1, a lens optical system 22 including a focus lens and a zoom lens (not shown) constituting the photographing lens 3 is provided so as to be movable within a predetermined range in the optical axis direction by driving a motor 21. A CCD 23, which is an image sensor, is disposed behind the optical axis. The CCD 23 receives light passing through the photographing lens 3 and acquires image data corresponding to the amount of received light.

  In the recording mode, which is the basic mode, the CCD 23 is scanned and driven by a timing generator (TG) 24 and a driver 25, and outputs a photoelectric conversion output corresponding to a light image formed at regular intervals for one screen.

  The photoelectric conversion output of the CCD 23 is appropriately gain-adjusted for each primary color component of RGB in the state of an analog value signal, sampled and held by the sample hold circuit 26, and converted into digital data by the A / D converter 27. The In the color process circuit 28, color process processing including pixel interpolation processing and γ correction processing is performed to generate digital luminance signals Y and color difference signals Cb, Cr, which are sent to a DMA (Direct Memory Access) controller 29. Is output.

  The DMA controller 29 once uses the luminance signal Y and the color difference signals Cb and Cr output from the color process circuit 28 by using the composite synchronization signal, memory write enable signal, and clock signal from the color process circuit 28 once. And the DMA transfer to the DRAM 31 used as the buffer memory via the DRAM interface (I / F) 30.

  The control unit 32 includes a microcomputer including a CPU 32a, a ROM 32b that stores an operation program executed by the CPU 32a, a RAM 32c used as a work memory, and the like. The control unit 32 controls the entire digital camera 1, and after the DMA transfer of the luminance and color difference signals to the DRAM 31 is completed, the luminance and color difference signals are read from the DRAM 31 via the DRAM interface 30 and the VRAM controller 33 is read. To the VRAM 34.

  The digital video encoder 35 periodically reads the luminance and color difference signals from the VRAM 34 via the VRAM controller 33, generates a video signal based on these data, and outputs the video signal to the display unit 19.

  As described above, the display unit 19 functions as a monitor display unit (electronic finder) at the time of shooting. By performing display based on the video signal from the digital video encoder 35, the display unit 19 captures from the VRAM controller 33 at that time. An image based on the image information is displayed in real time.

  As described above, when the image at that time is displayed in real time as the monitor image on the display unit 19, for example, when the shutter key 9 is pressed at a timing at which still image shooting is desired, a trigger signal is generated.

  In response to the trigger signal, the control unit 32 immediately stops the path from the CCD 23 to the DRAM 31 immediately after the DMA transfer of the luminance and color difference signals for one screen captured from the CCD 23 to the DRAM 31 is completed. , Transition to the record storage state.

  In this recording and storage state, the control unit 32 outputs the luminance and color difference signals for one frame written in the DRAM 31 to 8 pixels × 8 pixels for each of Y, Cb, and Cr components via the DRAM interface 30. The data is read out in units called basic blocks, written in a JPEG (Joint Photographic Coding Experts Group) processing block existing in the image processing unit 37, and the image processing unit 37 uses ADCT (Adaptive Discrete Cosine Transform: adaptive discrete cosine transform). ), The data is compressed by a process such as Huffman coding, which is an entropy coding method.

  The obtained code data is read out from the image processing unit 37 as a data file of one image and written in the recording memory 38. The memory 38 includes a memory card that is detachably mounted as a recording medium in addition to an internal memory such as a flash memory built in the main body in advance. With the compression processing of the luminance and color difference signals for one frame and the completion of writing all the compressed data to the memory 38, the control unit 32 activates the path from the CCD 23 to the DRAM 31 again.

  The control unit 32 is further connected with an audio processing unit 39, a USB interface (I / F) 40, a strobe driving unit 41, and a movement detection unit 42.

  The audio processing unit 39 performs input / output processing of audio data including A / D conversion and D / A conversion. When shooting a moving image, the analog processing unit 39 receives an analog input from the microphone unit (MIC) 7 in synchronization with the moving image data. Digitally capture audio signals. At the time of reproduction, the audio data separated from the moving image data with audio is converted into analog data and output through a speaker unit (SP) 13 provided on the back side of the digital camera 1.

  The USB interface 40 performs communication control when image data and other information are transmitted / received to / from another information terminal device such as a personal computer connected by wire via a USB connector. The strobe drive unit 41 charges a strobe capacitor (not shown) at the time of shooting, and then drives the strobe light emitting unit 6 to flash based on control from the control unit 32.

  The movement detection unit 42 includes, for example, a three-axis acceleration sensor and detects a movement distance when the apparatus main body is moved in an arbitrary direction during photographing. The movement distance detected by the movement detection unit 42 is used for a focus frame display process described later.

  In addition to the shutter key 9 described above, the key input unit 36 includes a power key 8, a shooting mode key 10, a playback mode key 11, a macro key 14, a strobe key 15, a menu key 16, a ring key 17, and a set key. 18 and the like, and signals accompanying these key operations are sent directly to the control unit 32.

  Further, when shooting a moving image instead of a still image, the moving picture processing group (MPEG) or motion is a moving image processing block existing in the image processing unit 37 described above when the shutter key 9 is pressed. -Captured moving image data is compressed and recorded in the memory 38 by a method such as JPEG (Joint Photographic Experts Group). When the shutter key 9 is operated again, the recording of the moving image data is finished.

  On the other hand, in the playback mode, which is the basic mode, the control unit 32 selectively reads out the image data recorded in the memory 38, and the image processing unit 37 compresses the image data in a procedure that is completely opposite to the procedure of data compression in the recording mode. Decompress the image data. The decompressed image data is held in the DRAM 31 via the DRAM interface 30, and then the content held in the DRAM 31 is stored in the VRAM 34 via the VRAM controller 33. The image data is periodically read out from the VRAM 34. A video signal is generated and reproduced and output by the display unit 19.

  If the selected image data is not a still image but a moving image, the multiple frames of still image data that make up the moving image data are played back and displayed sequentially in chronological order, and all the still image data is played back. For example, the top still image data is displayed until the next playback instruction is given.

  Next, the operation of the embodiment will be described.

  FIG. 3 is a flowchart showing a processing operation at the time of photographing by the digital camera 1 in the embodiment. Note that the processing shown in this flowchart is executed when the control unit 32 (CPU 32a), which is a microprocessor, reads a program stored in the ROM 32b or the like.

  When the still image shooting mode is set by operating the shooting mode key 10 provided in the digital camera 1 after the power is turned on, the image of the subject is captured through the lens optical system 22 and the CCD 23, and after undergoing a predetermined color process. The through image is displayed on the screen of the display unit 19 (step A11).

  In this state, when the user gives a focus instruction by half-pressing the shutter key 9 (Yes in Step A12), the control unit 32 (CPU 32a) executes AF processing (automatic focus processing), and the screen The camera focuses on a predetermined position above (for example, the center of the screen) (step A13). Specifically, for example, in the case of AF processing using a contrast detection method, the contrast (high-frequency component) of image data corresponding to the predetermined position is determined while moving the focus lens included in the lens optical system 22 in the optical axis direction. A process of detecting and determining the position where the contrast becomes the largest as the in-focus position is performed.

  After focusing by the AF process, the control unit 32 displays a focus frame 51 of a predetermined size on the focused part of the currently displayed through image 50 as shown in FIG. 4 (step A14). In the example of FIG. 4, the focus frame 51 is displayed on the face portion of the person, and it can be seen that the focus is set here.

  When the shutter key 9 is pressed halfway, the focus frame 51 is displayed at the predetermined position (for example, at the center of the screen), and the focus frame 51 is changed in focus after the focus is achieved by the AF process. The user may be informed of this. Changing the display form of the focus frame 51 is, for example, changing the display color or shape.

  Subsequently, the control unit 32 sets the cumulative movement distances Sx, Sy, Sz in the X, Y, and Z directions in the RAM 32c (step A15). In this case, Sx = 0, Sy = 0, and Sz = 0 are set as initial values. Here, since a planar movement distance on the screen may be obtained, the cumulative movement distance Sz in the Z direction is not necessarily required. Below, this Sz is excluded and demonstrated.

  Here, when the user moves the digital camera 1 in an arbitrary direction with the shutter key 9 half-pressed (focus locked) in order to change the shooting range (Yes in step A16), The movement distance is detected by the movement detector 42 (step A17). The movement detection unit 42 is composed of, for example, a three-axis acceleration sensor, and detects how much the apparatus body of the digital camera 1 has moved in the X, Y, and Z directions. The control unit 32 updates the cumulative movement distances Sx and Sy set in the RAM 32c based on the movement distances in the respective directions detected by the movement detection unit 42 (step A18).

  Specifically, as shown in FIG. 6, when the digital camera 1 is moved in the X direction (left and right direction) with the photographing lens 3 facing the subject, it is moved in the Y direction (up and down direction). Let's consider the case.

  When the digital camera 1 is moved rightward (in the direction of the arrow X1) toward the subject, the value of the cumulative movement distance Sx in the X direction is updated by +1 according to the movement distance. Conversely, when the digital camera 1 is moved leftward (in the direction of the arrow X2) toward the subject, the value of the cumulative movement distance Sx in the X direction is updated by −1 in accordance with the movement distance. The same applies when the digital camera 1 is moved in the Y direction. When the digital camera 1 is moved upward (in the direction of the arrow Y1), the value of the cumulative movement distance Sy in the Y direction is updated by +1 according to the movement distance. Is done. Conversely, when the digital camera 1 is moved downward (in the direction of the arrow Y2), the value of the cumulative movement distance Sy in the Y direction is updated by −1 according to the movement distance.

  For example, if the digital camera 1 is updated by +1 in units of 10 cm, Sx = 5 and Sy = 3 when the digital camera 1 is moved to the right by 50 cm and moved upward by 30 cm after the focus lock. Further, when moving leftward by 50 cm and downwardly by 30 cm, Sx = −5 and Sy = −3.

  In this way, when the values of the accumulated movement distances Sx and Sy are updated in accordance with the movement of the digital camera 1 with respect to the subject after the focus lock, the control unit 32 sets the updated values of the accumulated movement distances Sx and Sy. Based on this, the focus frame 51 is moved and displayed (step A19). In this case, if Sx = 5 and Sy = 3, the focus frame 51 is moved by the same moving distance in the opposite direction to the moving direction of the digital camera 1, such as −5 in the X direction and −3 in the Y direction. Move. As a result, as shown in FIG. 5, as the digital camera 1 moves, the focus frame 51 is always positioned and displayed at the focused portion (person's face portion) on the through image 50.

  When the user gives a shooting instruction by pressing the shutter key 9 (Yes in Step A20), the control unit 32 executes a predetermined shooting process to capture the currently displayed through image as a still image, The data is compressed by a predetermined method and recorded in the memory 38 (step A21). The photographing process has been described in detail with reference to FIG.

  Thus, for example, after focusing on the center of the screen or the like, the focus frame 51 is always in focus even when the digital camera 1 is moved in any direction with the focus locked to change the composition of the subject. Since the image is displayed on the portion, the user can release the shutter at a desired timing without losing sight of the focused portion.

(Other embodiments)
Next, as another embodiment of the present invention, a case where an image of a focused part and its color are displayed will be described.

  FIG. 7 is a flowchart showing a processing operation at the time of photographing by a digital camera according to another embodiment of the present invention. Note that the processing shown in this flowchart is executed when the control unit 32 (CPU 32a), which is a microprocessor, reads a program stored in the ROM 32b or the like.

  When the still image shooting mode is set by operating the shooting mode key 10 provided in the digital camera 1 after the power is turned on, the image of the subject is captured through the lens optical system 22 and the CCD 23, and after undergoing a predetermined color process. The through image is displayed on the screen of the display unit 19 (step B11).

  In this state, when the user gives a focus instruction by half-pressing the shutter key 9 (Yes in Step B12), the control unit 32 (CPU 32a) executes the AF process (automatic focus process), and the screen The camera focuses on a predetermined position above (for example, the center of the screen) (step B13). Specifically, for example, in the case of AF processing using a contrast detection method, the contrast (high-frequency component) of the image data corresponding to the predetermined position in the through image is detected, and the lens optical is positioned at the position where the contrast becomes the largest. Processing such as moving the focus lens of the system 22 is performed.

  After focusing by the AF process, the control unit 32 displays a focus frame 51 of a predetermined size on the focused part in the currently displayed through image 50 as shown in FIG. 8 (step B14). In the example of FIG. 8, the focus frame 51 is displayed on the face portion of the person, and it can be seen that the focus is set here.

  When the shutter key 9 is pressed halfway, the focus frame 51 is displayed at the predetermined position (for example, at the center of the screen), and the focus frame 51 is changed in focus after the focus is achieved by the AF process. The user may be informed of this. Changing the display form of the focus frame 51 is, for example, changing the display color or shape.

  Here, when the user issues an in-focus image display instruction by operating, for example, the menu key 16 (Yes in Step B15), the control unit 32 focuses on the image in the focus frame 51 from the currently displayed through image 50. It is extracted as an image of a matching part (referred to as a focused image) (step B16). Then, the control unit 32 opens a window screen 52 as shown in FIG. 8 at a predetermined position on the screen, and displays the extracted focused image 53 there (step B17). In this example, since the face portion of the person is in focus, the image of that portion is displayed as the focused image 53.

  In addition, as a display method of the focused image 53, the whole focused image 53 may be displayed, or only a part including the center may be displayed. At that time, the image may be enlarged and displayed in a predetermined size.

  On the other hand, for example, when the user gives a color display instruction by operating the menu key 16 (Yes in step B18), the control unit 32 starts from the currently displayed through image 50 with a dot of 1 dot at the center of the image in the focus frame 51. Color data is extracted as the color of the in-focus portion (step B16). Then, the control unit 32 opens a window screen 52 as shown in FIG. 8 at a predetermined position on the screen, and displays a color mark 54 based on the detected color data (step B17). In this example, since the face portion of the person is in focus, if the center portion is “skin color”, the “skin color” color mark 54 is displayed.

  The shape and size of the color mark 54 are arbitrarily set, and can be arbitrarily selected by the user from various shapes such as a rectangle and a circle, and the mark size can be arbitrarily changed.

  In the example of FIG. 8, the focused image 53 and the color mark 54 are displayed in the same window screen 52, but they may be displayed in separate window screens.

  Such an in-focus image 53 and the color mark 54 are displayed until the display release is instructed explicitly by, for example, operating the menu key 16 or until the focus lock is released by releasing the shutter key 9. Is done.

  The subsequent processing is the same as the processing in steps A15 to A21 in FIG. That is, as described above, with the movement of the digital camera 1, the focus frame 51 is also moved so that the focus frame 51 is always displayed at the focused position, and if there is a shooting instruction by pressing the shutter key 9, The through image is captured as a still image, compressed by a predetermined method, and recorded in the memory 38.

  Even if the focus frame 51 is moved in accordance with the movement of the digital camera 1 (after step A19), if an instruction to display a focused image or a color is given by operating the menu key 16 or the like, the window screen is displayed according to the display instruction. 52 is opened, and the focused image 53 and the color mark 54 are displayed as described above.

  In this way, by displaying the focused image 53 and the color mark 54 on the window screen 52, the user can more accurately know where the subject is focused, and the digital camera 1 can be moved. Even if the shooting range (composition) is changed, anyone can easily take a picture without losing sight of the focused part.

  In the above-described embodiment, the AF function is used to focus on a predetermined position such as the center of the screen in advance. However, the user may arbitrarily specify the position on the screen for focusing.

  In the above embodiment, the digital camera has been described as an example. However, the present invention is not limited to this, and a through image is displayed on a screen such as a digital movie camera capable of taking a still image or a mobile phone with a camera. However, the present invention can be applied to all electronic devices provided with a function capable of shooting a still image.

  In addition, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  In addition, the method described in the above-described embodiment can be applied to a recording medium such as a magnetic disk (flexible disk, hard disk, etc.), an optical disk (CD-ROM, DVD, etc.), a semiconductor memory, etc. as a program that can be executed by a computer. The program can be written and applied to various apparatuses, or the program itself can be transmitted through a transmission medium such as a network and applied to various apparatuses. A computer that implements this apparatus reads a program recorded on a recording medium or a program provided via a transmission medium, and performs the above-described processing by controlling the operation by this program.

FIGS. 1A and 1B are diagrams showing an external configuration when a digital camera is taken as an example of an imaging apparatus according to an embodiment of the present invention, in which FIG. 1A is mainly a front configuration, and FIG. FIG. FIG. 2 is a block diagram showing an electronic circuit configuration of the digital camera in the embodiment. 6 is a flowchart showing processing operations at the time of shooting by the digital camera in the embodiment. FIG. 6 is a diagram illustrating an example of a through image display screen of the digital camera according to the embodiment, for explaining a display of a focus frame when the focus is locked. FIG. 4 is a diagram illustrating an example of a through image display screen of the digital camera according to the embodiment, for explaining a display of a focus frame when the camera is moved in a focus-locked state. The figure for demonstrating the relationship between the moving direction of the digital camera in the same embodiment, and the moving direction of a focus frame. 9 is a flowchart showing a processing operation at the time of photographing by a digital camera according to another embodiment of the present invention. FIG. 4 is a diagram illustrating an example of a through image display screen of the digital camera according to the embodiment, and is a diagram for explaining display of an image and color of a focused part.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Digital camera, 2 ... Body, 3 ... Shooting lens, 4 ... Self-timer lamp, 5 ... Optical finder window, 6 ... Strobe light emission part, 7 ... Microphone part, 8 ... Power key, 9 ... Shutter key, 10 ... Photographing Mode key, 11 ... Playback mode key, 12 ... Optical viewfinder, 13 ... Speaker unit, 14 ... Macro key, 15 ... Strobe key, 16 ... Menu (MENU) key, 17 ... Ring key, 18 ... Set key, DESCRIPTION OF SYMBOLS 19 ... Display part, 21 ... Motor, 22 ... Lens optical system, 23 ... CCD, 24 ... Timing generator (TG), 25 ... Driver, 26 ... Sample hold circuit (S / H), 27 ... A / D converter 28 ... Color process circuit, 29 ... DMA controller, 30 ... DRAM interface (I / F), 31 ... DRAM, 32 ... Control unit, 33 ... VR M controller, 34 ... VRAM, 35 ... digital video encoder, 36 ... key input unit, 37 ... image processing unit, 38 ... memory, 39 ... sound processing unit, 40 ... USB interface (I / F), 42 ... movement detection unit 50 ... Through image, 51 ... Focus frame, 52 ... Window screen, 53 ... Focus image, 54 ... Color mark.

Claims (5)

Imaging means for imaging a subject;
Display means for displaying subject image data obtained by the imaging means as a through image;
Focusing processing means for performing a focusing process on the through image displayed by the display means, and displaying a focus frame on a portion focused by the focusing process;
A movement detecting means for detecting a moving distance when the apparatus main body is moved in an arbitrary direction;
Based on the moving distance detected by the movement detecting means, the focus frame displayed by the focusing processing means is moved in a direction opposite to the moving direction of the apparatus main body to focus on the through image. An image pickup apparatus comprising: control means for positioning at the portion. Color detection means for detecting the color of the in-focus portion from the through image;
The image pickup apparatus according to claim 1, further comprising color display means for displaying the color detected by the color detection means in a predetermined format. Image extracting means for extracting an image of a portion in focus from the through image;
The imaging apparatus according to claim 1, further comprising: an image display unit that displays the image extracted by the image extraction unit in a predetermined format. An in-focus display method used in an imaging device including an imaging device that images a subject and a display unit that displays image data of the subject obtained by the imaging device as a through image,
Performing a focusing process on the through image displayed on the display unit, and displaying a focus frame on a portion focused by the focusing process;
Detecting a moving distance when the apparatus main body is moved in an arbitrary direction;
Moving the focus frame in a direction opposite to the moving direction of the apparatus main body based on the moving distance of the apparatus main body, and positioning the focused frame in the through image. In-focus display method. A program that is executed by a computer that controls an imaging device that includes an imaging device that images a subject and a display unit that displays image data of the subject obtained by the imaging device as a through image,
In the computer,
A function of performing a focusing process on the through image displayed on the display unit, and displaying a focus frame on a portion focused by the focusing process;
A function for detecting the moving distance when the device body is moved in an arbitrary direction;
A function of moving the focus frame in a direction opposite to the moving direction of the apparatus main body based on the moving distance of the apparatus main body to position the focused frame in the through image. Program.

Images